4th Grade 9WK Science Review

Which of the following best shows weathering?

• A. A river carrying rocks downstream

• B. Wind blowing sand into dunes

• C. Ice breaking rock apart in cracks

• D. Waves building a sandbar

What happens to daylight hours during winter?

• They increase

• They stay the same

• They decrease

• They double

Which moon phase comes after a full moon?

• New moon

• Waxing crescent

• Waning gibbous

• First quarter

What part of the water cycle causes water to rise into the sky?

• Condensation

• Precipitation

• Evaporation

Which best describes climate?

• Today’s temperature

• Weekly forecast

• Daily wind speed

• 30 years of average weather

Which is a nonrenewable resource? SELECT ALL THAT APPLY

• coal

• Water

• Trees

• Oil

Why are producers important in a food web?

• They eat other animals

• They recycle nutrients

• They make their own food and give energy to others

• They store energy for decomposers

What do decomposers do in a food web?

• Create food for other animals

• Eat plants and animals

• Break down dead organisms and return nutrients to the soil

• Use the Sun to make energy

Which of these is an example of a decomposer?

• Bear

• Tree

• Earthworm

• Deer

What is the main source of energy for all living things in a food web?

• Water

• The Sun

• Oxygen

• Soil